Association of Breastfeeding Duration with Body Composition in Children Aged 3-5 Years / 生物医学与环境科学（英文）

OBJECTIVE@#This study aimed to assess the relationship between the body composition of children aged 3-5 years and breastfeeding status and duration.@*METHODS@#The study was conducted using data from the National Nutrition and Health Systematic Survey for children 0-17 years of age in China (CNHSC), a nationwide cross-sectional study. Breastfeeding information and potential confounders were collected using standardized questionnaires administered through face-to-face interviews. The body composition of preschool children was measured using bioelectrical impedance analysis. A multivariate linear regression model was used to assess the relationship between breastfeeding duration and body composition after adjusting for potential confounders.@*RESULTS@#In total, 2,008 participants were included in the study. Of these, 89.2% were ever breastfed and the median duration of breastfeeding was 12 months (IQR 7-15 months). Among children aged 3 years, the height-for-age Z-score (HAZ) for the ever breastfed group was lower than that for never breastfed group (0.12 vs. 0.42, P = 0.043). In addition, the weight-for-age Z-score (WAZ) of the ever breastfed group was lower than that of the never breastfed group (0.31 vs. 0.65, P = 0.026), and the WAZ was lower in children aged 4 years who breastfed between 12 and 23 months than in those who never breastfed. Compared to the formula-fed children, the fat-free mass of breastfed infants was higher for children aged 3 years (12.84 kg vs. 12.52 kg, P = 0.015) and lower for those aged 4 years (14.31 kg vs. 14.64 kg, P = 0.048), but no difference was detected for children aged 5 years (16.40 kg vs. 16.42 kg, P = 0.910) after adjusting for potential confounders. No significant difference was detected in the weight-for-height Z-score (WHZ), body mass index (BMI)-for-age Z-score (BAZ), fat-free mass index, and body fat indicators in the ever breastfed and never breastfed groups and among various breastfeeding duration groups for children aged 3-5 years.@*CONCLUSION@#No obvious associations were detected between breastfeeding duration, BMI, and fat mass indicators. Future prospective studies should explore the relationship between breastfeeding status and fat-free mass.

Research progress of cell membrane-coated biomimetic nanoparticle delivery systems for the treatment of lung diseases / 药学学报

Lung is susceptible to external disturbance, resulting in a variety of acute and chronic lung diseases. Functionalized nanoparticles as carriers can carry drugs through multiple biological barriers of lung into lung lesions, but there are some problems such as poor targeting and low therapeutic efficiency. As a drug carrier, membrane-coated biomimetic nanoparticles have the characteristics of immune system escape, active targeting, inflammatory chemotaxis and crossing physiological barriers due to the retention of the characteristics of the source cells. Therefore, it has been widely used in the treatment of lung diseases in recent years. In this review, the application of membrane-coated biomimetic nanoparticles in the treatment of lung diseases in the recent years was summarized and classified. Cell membrane sources include erythrocyte membrane, platelet membrane, macrophage membrane, neutrophil membrane, lung epithelial membrane, lung surfactant, endothelial membrane, cancer cell membrane, bacterial membrane, hybrid membrane and so on. The purpose of this review is to provide a new idea for treating lung diseases with membrane-coated biomimetic nanoparticles.

National Nutrition and Health Systematic Survey for Children 0-17 Years of Age in China / 生物医学与环境科学（英文）

The main purpose of the National Nutrition and Health Systematic Survey for children 0-17 years of age in China (CNHSC) was to collect basic data on the nutrition, development, and health status for children in different regions across China using evidence-based, reliable, and cost-effective approaches. Children and their parents or guardians from seven regions (south, southwest, north, northwest, eastern, central, and northeast China) in China were recruited. A multi-stage stratified randomized sampling method was used. Two provinces were randomly sampled from each of the seven regions, from which one urban district and one rural country were also randomly sampled, resulting in a total of 28 survey counties/districts. Dietary surveys, health examinations, laboratory testing, and questionnaires were used to collect dietary intake, nutritional status, child development, and health status information. Nutrition, health, and lifestyle assessment of children and their parents was determined using the Knowledge Attitude Practice (KAP) survey. Greater than 100,000 children (38,000 children < 6 years of age and 66,000 children 6-17 years of age) completed the survey. The survey provided comprehensive data on child nutrition and health status for future studies and will serve as the basis for an integrated nutrition and health improvement strategies proposal for children in China.

The Patterns of Complementary Feeding and Growth among 12 to 23 Month-Old Children in China / 生物医学与环境科学（英文）

Objective@#This study aimed to understand the characteristics of dietary patterns among children aged 12 to 23 months and discusses the relationship between dietary patterns and the growth of children.@*Method@#Cross-sectional data were selected from the National Nutrition and Health Systematic Survey for 0 to 18 year-old children in China ( @*Results@#Four dietary patterns were identified among the children @*Conclusion@#Although China is undergoing rapid urbanization and economic development, there is still a phenomenon of insufficient intake of protein-rich foods and dairy-based dietary patterns at the stage of complementary food introduced among children aged 12 to 23 months.

Cardiovascular and renal burdens of metabolic associated fatty liver disease from serial US national surveys, 1999-2016 / 中华医学杂志(英文版)

BACKGROUND@#Non-communicable chronic diseases have become the leading causes of disease burden worldwide. The trends and burden of "metabolic associated fatty liver disease" (MAFLD) are unknown. We aimed to investigate the cardiovascular and renal burdens in adults with MAFLD and non-alcoholic fatty liver disease (NAFLD).@*METHODS@#Nationally representative data were analyzed including data from 19,617 non-pregnant adults aged ≥20 years from the cross-sectional US National Health and Nutrition Examination Survey periods, 1999 to 2002, 2003 to 2006, 2007 to 2010, and 2011 to 2016. MAFLD was defined by the presence of hepatic steatosis plus general overweight/obesity, type 2 diabetes mellitus, or evidence of metabolic dysregulation.@*RESULTS@#The prevalence of MAFLD increased from 28.4% (95% confidence interval 26.3-30.6) in 1999 to 2002 to 35.8% (33.8-37.9) in 2011 to 2016. In 2011 to 2016, among adults with MAFLD, 49.0% (45.8-52.2) had hypertension, 57.8% (55.2-60.4) had dyslipidemia, 26.4% (23.9-28.9) had diabetes mellitus, 88.7% (87.0-80.1) had central obesity, and 18.5% (16.3-20.8) were current smokers. The 10-year cardiovascular risk ranged from 10.5% to 13.1%; 19.7% (17.6-21.9) had chronic kidney diseases (CKDs). Through the four periods, adults with MAFLD showed an increase in obesity; increase in treatment to lower blood pressure (BP), lipids, and hemoglobin A1c; and increase in goal achievements for BP and lipids but not in goal achievement for glycemic control in diabetes mellitus. Patients showed a decreasing 10-year cardiovascular risk over time but no change in the prevalence of CKDs, myocardial infarction, or stroke. Generally, although participants with NAFLD and those with MAFLD had a comparable prevalence of cardiovascular disease and CKD, the prevalence of MAFLD was significantly higher than that of NAFLD.@*CONCLUSIONS@#From 1999 to 2016, cardiovascular and renal risks and diseases have become highly prevalent in adults with MAFLD. The absolute cardiorenal burden may be greater for MAFLD than for NAFLD. These data call for early identification and risk stratification of MAFLD and close collaboration between endocrinologists and hepatologists.

Spatial distribution of canine echinococcosis in Inner Mongolia Autonomous Region from 2012 to 2018 / 中国血吸虫病防治杂志

Objective To investigate the distribution and changing trend of canine echinococcosis in Inner Mongolia Autonomous Region, so as to provide the scientific evidence for prevention and control of canine echinococcosis in high-risk areas of Inner Mongolia Autonomous Region. Methods All data pertaining to Echinococcus infections in canine feces and sampling survey of human echinococcosis were collected from the echinococcosis-endemic foci of Inner Mongolia Autonomous Region from 2012 to 2018, and the prevalence of Echinococcus infections was investigated in dogs and humans. In addition, the spatial distribution characteristics and clusters of canine echinococcoses were identified. Results A total of 164 139 canine fecal samples were detected in the echinococcosis-endemic foci of Inner Mongolia Autonomous Region from 2012 to 2018, and there were 2 136 fecal samples positive for Echinococcus coproantigens. The positive rates of Echinococcus coproantigens were 0.54% to 1.73% in dogs from 2012 to 2018, with a tendency towards a decline seen in the prevalence of Echinococcus infections in dogs (χ2 = 108.83, P < 0.01), and there was a significant difference in the positive rate of Echinococcus coproantigens in dogs among years (χ2 = 155.27, P < 0.01). Three-dimensional trend analysis showed that canine echinococcosis was mainly concentrated in east of central Inner Mongolia Autonomous Region, and a high prevalence was detected in New Barag Right Banner and Sonid Right Banner. The global spatial distribution of canine echinococcosis appeared a random pattern in Inner Mongolia Autonomous Region from 2012 to 2018 (Moran’s I > 0, P > 0.05), and there were “high-high” and “high-low” clusters of canine echinococcosis in local areas. The prevalence of human echinococcosis was 0.08%, and there was a significant difference in the prevalence among regions (χ2 = 147.61, P < 0.01), with a high prevalence seen in West Ujimqin Banner, Jarud Banner and New Barag Right Banner. In addition, the prevalence of human echinococcosis correlated positively with the Echinococcus coproantigen-positive rate in dogs (r = 0.52, P < 0.01). Conclusions The prevalence of Echinococcus infections shows an overall tendency towards a decline in dogs in Inner Mongolia Autonomous Region from 2012 to 2018, with a high prevalence found in New Barag Right Banner and Sonid Right Banner. Human echinococcosis is concentrated in clusters of canine echinococcosis, where health education and targeted control interventions requires to be intensified.

Comparison of clinical efficacy between bursa omentalis approach and medial-to-lateral approach in laparoscopic left hemicolectomy: a propensity score matching analysis / 中华胃肠外科杂志

Objective: Splenic flexure mobilization is technically difficult during the resection of left hemicolon cancer. This study aims to compare the safety and effectiveness between the bursa omentalis approach (BOA) and medial-to-lateral approach (MTLA) in laparoscopic radical resection of left-sided colon cancer. Methods: A retrospective cohort study was conducted. Inclusion criteria: (1) patients underwent radical resection of left hemicolon cancer; (2) the postoperative pathological result was adenocarcinoma; (3) patients aged 18-80 years old; (4) no liver, peritoneal or other distant metastasis. Exclusion criteria: (1) poor physical condition with serious heart, brain, lung, liver, kidney and hematopoietic system diseases; (2) unable to tolerate laparoscopic surgery; (3) history of other malignancies simultaneously, or multisource tumors; (4) emergency operation due to bleeding, obstruction, perforation, etc. Clinical data of 189 patients who underwent laparoscopic left hemicolectomy in the Guangdong Provincial Hospital of Chinese Medicine from 2014 to 2020 were retrospectively analyzed. According to surgical approaches, patients were divided into the BOA group (52 cases) and MTLA group (137 cases). The whole group of patients were matched by propensity score matching (PSM) according to the nearest neighbor matching method. The caliper value was 0.01. The matching variables included gender, age, American Society of Anesthesiologists (ASA) score, body mass index, tumor location and tumor stage. After PSM, 47 patients were included in the BOA group and MTLA group, respectively. There were no significant differences in baseline data between the two groups after PSM (all P>0.05). Paired t-test, paired rank sum test and paired Chi-square test were used to compare intraoperative and postoperative paramether between the two groups. Kaplan-Meier method was used to draw the survival curve, and log rank test was used for inter group comparison. When the two survival curves intersect, the two-stage method and restricted mean survival time (RMST) were further performed. Results: Both groups of patients successfully completed the operation without conversion to laparotomy or intraoperative death. No combined splenectomy or pancreatectomy were performed in the two groups. There were also no significant differences in intraoperative blood loss, number of harvested lymph nodes, time to the first flatus and the length of hospital stay between the two groups (all P>0.05). However, the median laparoscopic dissection time in the BOA group was shorter than that in the MTLA group, and the difference was statistically significant (median: 56 minutes vs. 65 minutes, P=0.032). No entry to posterior pancreatic space was recorded in the BOA group but wrong entry to posterior pancreatic space happened to 6.4% (3/47) of patients (body mass index >25 kg/m(2)) when dissecting left Toldt's fascia in the MTLA group. The 3-year disease-free survival rate in BOA group and MTLA group was 90.2% and 86.1%, respectively (P=0.909) and the 3-year overall survival rate was 85.6% and 94.4%, respectively (P=0.532). Conclusions: BOA is safe and feasible in laparoscopic left hemicolectomy, especially for inexperienced surgeons. For obese patients, BOA facilitates the entrance into the correct anatomical level and avoid entering the retropancreatic space.

Phosphoglycerate kinase 1 and cancer / 药学学报

Phosphoglycerate kinase 1 (PGK1) is a key metabolic enzyme in the glycolysis pathway, which catalyzes the transfer of 1,3-bisphosphoglycerate (1,3-BPG) to 3-phosphoglycerate (3-PG) with ATP production. Over-expression of PGK1 has been observed in many types of malignance. Besides as a metabolic enzyme, PGK1 can also act as a protein kinase, which promotes the development and progression of tumors and correlates with chemoradiotherapy resistance and poor survival of cancer patients by regulating tumor cell metabolism. Functions of PGK1 were summarized in this article to provide theoretical basis for PGK1-targeting drug development.

Childhood BMI and Adult Obesity in a Chinese Sample: A 13-Year Follow-up Study / 生物医学与环境科学（英文）

OBJECTIVE@#Obesity is recognized as a significant risk factor for diabetes and hypertension. The present study aimed to examine the associations between adults'obesity risk and childhood and parental obesity.@*METHODS@#A total of 204 children aged 6-17 years were recruited in 2002 with an average follow-up period of 13.2 years. Height and body weight were measured by trained staffs. Overweight and obesity were defined based on the Chinese standard for children and adults. T-test, analysis of variance, and Chi-square analysis were used for single factor analysis. Multiple linear and logistic regression analyses were used to perform multifactor analysis.@*RESULTS@#The percentage of non-obese children who grew up to be non-obese adults was 62.6%, and that of obese children who grew up to be obese adults was 80.0%. There was a significant association between childhood body mass index (BMI) and adulthood BMI with a β regression coefficient of 3.76 [95% confidence interval (CI): 1.36-6.16], and between childhood obesity and adulthood obesity with an odds ratio of 5.76 (95% CI: 1.37-24.34). There was no statistical difference between parental obesity at baseline and children's adulthood obesity, after adjustment of confounders. Male participants and those aged 10.0-13.0 years had a higher risk of adulthood obesity with odds ratios of 2.50 (95% CI: 1.12-5.26) and 3.62 (95% CI: 1.17-11.24), respectively.@*CONCLUSION@#Childhood obesity is an important predictor of adulthood obesity.

Validity and Reliability of Chinese Physical Activity Questionnaire for Children Aged 10-17 Years / 生物医学与环境科学（英文）

OBJECTIVE@#This study is aimed to report the development, the reliability and validity of the Chinese Children Physical Activity Questionnaire (CCPAQ) which was designed for the assessment of physical activity pattern in young population in China.@*METHODS@#The CCPAQ was administered for two times in 119 children (mean age 13.1 ± 2.4 years; boys 47%) to examine reliability by using intraclass correlation coefficients. Validity was determined in 106 participants by agreement with the CCPAQ measures and the objective method, the ActiGraph accelerometer. Data on physical activity pattern including time spent on different intensities and total physical activity, sedentary behavior as well as physical activity energy expenditure were used to assess the validity with Spearman's correlation coefficient and the Bland-Altman plots.@*RESULTS@#The reliability coefficient of the CCPAQ ranged from 0.63-0.93 (Intra-class correlation coefficient). Spearman's correlation coefficient for validity of time spent on total physical activity and sedentary behavior were all 0.32 (P < 0.001), and for physical activity energy expenditure was 0.58 (P < 0.001). Time spent on moderate-to-vigorous physical activity and light physical activity showed a relatively low correlation with the accelerometer (rho = 0.20, P = 0.040; rho = 0.19, P = 0.054).@*CONCLUSION@#The CCPAQ appears to be a promising and feasible method to assess physical activity pattern in Chinese children.

The study of the protective effect of panoxadiol on Alzheimer’s disease cells based on network pharmacology / 中国药理学通报

Aim To explore the therapeutic effects of main active compounds of panaxadiol ( PD ) in on Alzheimer’s disease ( AD) via network pharmacologi-cal analysis and Mmolecular docking. Methods A to-tal of 107 prescriptions for AD treatment were screened by using network pharmacology, screening for the high-est frequency of ginseng and its target for AD. Use mo-lecular docking technology was used to find components with the highest score for non-receptor tyrosine kinase ( FYN) docking. Then we successfully estimatedestab-lished AD cell model with overexpressinged APP pro-teins in vitro. Next,the cell viability was detected by MTT assay,the cell damage was detected by LDH as-say,the apoptosis and intracellular Ca2+concentration were detected by flow cytometry, and phosphorylated FYN protein expression was detected by Western blot detection of . phosphorylated FYN protein expression. Results Eighteen active components of Gginseng and 29 AD-related targets were screened by the method of network pharmacology. The results of molecular doc-king showed that PD had strong binding effects with FYN. The results showed that PD could increase the survival rate of cells,reduce the release of LDH,reduce apoptosis,and improve AD cells’ intracellular Ca2+o-verload and reduce the expression of FYN-Y416 pro-tein. Conclusion The experimental results of network pharmacology were are verified and the protective effect of PD on AD may be related to inhibition of FYN signa-ling pathway.

Establishment of stem cell curriculum and thinking of teaching practice in graduate education / 医学研究生学报

In order to provide reference for development of the new curriculum for graduate students "The principle,technical and clinical practice of stem cell" and improve the quality of teaching and learning,we summarized some experiences and lessons for this course.This paper introduced some measures and achievements on the teaching reform from several aspects including curriculum design,selection of teaching content,teaching idea and mode,training the teaching groups and so on.Moreover,it especially emphasized that teaching contents should not only pay attention to the basic and clinical application,but also combine the present laws and keep abreast of scientific and technological developments.In the process of teaching,we need to value the quality of teachers and improve teaching standards,meanwhile we should pay attention to the culture of thought and the capacity of innovation,stimulating students' interests in studies,improving autonomous study and practices ability through multiple means and channels.This course teaching got satisfactory results and the acquired practice experiences were worth of being popularized in the further graduate students teaching.

Outcomes and rational clinical use of extended or continuous versus intermittent infusion of piperacil-lin/tazobactam / 中国药学杂志

OBJECTIVE: To introduce the research progress of dosage regimen of piperacillin/tazobactam and its rational offer reference for clinical use. METHODS: The domestic and oversea pertinent articles were searched, analyzed and summarized, and the difference between prolonged infusion or continuous infusion and traditional infusionin pharmacodynamics and clinical trials were compared. RESULTS: The optimized dosage regimen could achieve higher pharmacodynamics goals, with clinical efficacy and bacterial clearance not inferior to the traditional dosage regimen. CONCLUSION: The prolonged or continuous infusion strategy should be recommended for piperacillin/tazobactam in the clinic.

Ranibizumab Plus Combined Surgery for Treatment of Neovascular Glaucoma with Vitreous Hemorrhage / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Neovascular glaucoma (NVG) is a refractory glaucoma. The management of NVG is very difficult, and it is more difficult when combined with vitreous hemorrhage. The aim of this study was to investigate the effects of ranibizumab plus combined surgery for NVG with vitreous hemorrhage.</p><p><b>METHODS</b>A total of 26 eyes of 26 NVG patients with vitreous hemorrhage were recruited in this study. The patients aged from 36 to 63 years with a mean age of 51.97 ± 7.60 years. The mean intraocular pressure (IOP) was 46.38 ± 5.75 mmHg (1 mmHg = 0.133 kPa) while being treated with the maximum medical therapy. The mean best-corrected visual acuities converted to logarithm of the minimum angle of resolution (logMAR BCVA) was 2.62 ± 0.43. All the patients underwent intravitreal injection of 0.5 mg (0.05 ml) ranibizumab combined with pars plana vitrectomy (PPV), pars plana lensectomy (PPL) with a preserved anterior capsule, panretinal photocoagulation (PRP), and trabeculectomy (intravitreal ranibizumab [IVR] + PPV + PPL + PRP + trabeculectomy). The IOP and logMAR BCVA were the main outcome measures in this study.</p><p><b>RESULTS</b>The follow-up period was 12 months. The mean postoperative IOPs were 26.38 ± 3.75 mmHg, 21.36 ± 3.32 mmHg, 18.57 ± 3.21 mmHg, and 16.68 ± 2.96 mmHg, respectively at 7 days, 1 month, 3 months, and 12 months after PPV + PPL + PRP + trabeculectomy. At the last follow-up, the mean IOP was significantly lower than the preoperative one (t = 6.612, P = 0.001). At 7 days, 1 month, 3 months, and 12 months after PPV + PPL + PRP + trabeculectomy, the mean logMAR BCVA were 1.30 ± 0.36, 1.29 ± 0.37, 1.29 ± 0.39, and 1.26 ± 0.29, respectively. At the last follow-up, the mean logMAR BCVA was significantly improved, and the difference was statistically significant compared with preoperative one (t = 6.133, P = 0.002). The logMAR BCVA improved in 22 eyes (84.62%), and remained stable in 4 eyes (15.38%). The neovascularization in the iris and the angle regressed significantly in all patients 7 days after ranibizumab injection. No serious complications occurred during 12 months of the study.</p><p><b>CONCLUSIONS</b>IVR + PPV + PPL + PRP + trabeculectomy can control IOP well and improve BCVA without severe complication for NVG patients with vitreous hemorrhage.</p>

Expression of hepatocyte growth factor and its receptor c-Met in lens-induced myopia in guinea pigs / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Myopia is a common disorder and the incidence has increased yearly, but its pathogenesis remains unclear. The aim of this study was to investigate the possible role of hepatocyte growth factor (HGF) and its receptor c-Met in the development of lens-induced myopia in guinea pigs.</p><p><b>METHODS</b>Sixty one-week-old guinea pigs were chosen. The right eyes were treated with -10.0 diopters (D) lenses as the lens-induced myopia group; the left eyes remained untreated as the control group. Six weeks later, refractive status and axial length were determined by streak retinoscopy and A-scan ultrasonography, respectively. The guinea pigs were killed and both eyes collected. Morphological changes were observed by hematoxylin and eosin staining. The expression levels of HGF, c-Met, and matrix metalloproteinase 2 (MMP-2) mRNA and protein in the posterior sclera were analyzed by RT-PCR and Western blotting, respectively.</p><p><b>RESULTS</b>The lens-induced myopia group became myopic with a significant increase in axial length and a significant decrease in refraction. Compared with the control group, the posterior retina and sclera were thinner in the lens-induced myopia group. The expression levels of HGF and MMP-2 mRNA and protein and of phosphorylated c-Met protein were significantly higher in the posterior sclera of the lens-induced myopia group than in the control group (all P < 0.05). In the lens-induced myopia group, the expression level of MMP-2 in the posterior sclera positively correlated with the expression level of HGF (r = 0.902, P < 0.05) and phosphorylated c-Met (r = 0.885, P < 0.05).</p><p><b>CONCLUSION</b>HGF/c-Met might play a role in the development of lens-induced myopia in guinea pigs by upregulating the expression of MMP-2.</p>

Research of osteoblasts and mineralization culture method induced dental pulp stem cells into osteoblasts / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To find an ideal method inducing dental pulp stem cells (DPSC) osteogenic differentiation. To compare the effect of co-culture method and that of mineralizing culture medium.</p><p><b>METHODS</b>DPSC were co-cultured with osteoblasts using cell culture inserts system as experiment group, and DPSC were cultured in mineralizing culture medium as control group. The cell morphology and ultrastructure and mineralized nodes were analyzed under phase contrast microscope, transmission electron microscope, and alizarin red S staning. Bone sialoprotein (BSP), Runx-2, osteocalcin, and collagen-1 (Col-1) osteoblastic genes expressions of DPSC cultivated in special niche of osteoblasts were assayed by reverse transcription polymerase chain reaction (RT-PCR).</p><p><b>RESULTS</b>The mineralization nudoles of experiment group were more than control group. Fifteen days later, BSP and Col-1 genes in the DPSC of co-cultures were 9.807 ± 1.135 and 2.913 ± 0.310, respectively. And those in the DPSC of mineralizing culture medium were 6.478 ± 0.781 and 1.703 ± 0.184, respectively. Co-cultures and mineralizing were significantly different (P < 0.05).</p><p><b>CONCLUSIONS</b>As osteoblasts can secret lots of osteogenic cell cytokines, they have more significant effect than mineralizing culture medium on osteogenesis of DPSC.</p>

Experimental study on effect of different chromatographic conditions on QAMS relative correlation factors and relative retention values / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the effect of different chromatographic conditions on QAMS relative correlation factors (RCF) and relative retention values (RT(R)).</p><p><b>METHOD</b>C18 columns were used with methyl alcohol-0.4% phosphoric acid water (85: 15) as the mobile phase. The detection wavelength was 254 nm, the column temperature was 30 degrees C, and the flow rate was 1.0 mL x min(-1). The five anthraquinones in Rhei Radix et Rhizoma were selected to be the objects of study. The RCF and RT(R) among aloe-emodin, rhein, chrysophanol, physcion and emodin were determined under different chromatographic conditions.</p><p><b>RESULT</b>Their RCFs showed no significant difference.</p><p><b>CONCLUSION</b>The RCFs among anthraquinones established by QAMS can be used as a constant in content determination of traditional Chinese medicines/patent traditional Chinese medicines.</p>

Recent progress of study on retroviral mediated mouse model of myeloid leukemia --- review / 中国实验血液学杂志

Human leukemia is closely associated with various genetic alterations such as chromosomal translocations and gene mutations. The use of retroviral transduction/bone marrow transplantation mouse model harboring these genetic abnormalities has been critical in understanding the molecular pathogenesis of leukemia and exploring new therapeutic target. Additional genetic events are verified to cooperate with fusion genes resulting from chromosomal translocations in acute myeloid leukemia (AML) to develop a leukemic phenotype in mice, such as C-KIT N822K with AML1-ETO, FLT3-ITD with PML-RARα, Meis1 with NUP98-HOX, and Cdx4 with MLL-AF9. Mouse model shows that BCR/ABL fusion gene induces chronic myeloid leukemia (CML), and suggests that GATA-2 L359V and high expression of Hes1 are key molecules in acute myeloid transformation of CML. Furthermore, combination therapy with Imatinib and arsenic sulfide for CML mice exerts more profound therapeutic effects than either drug as a single agent. This review focuses the recent progress and application of retroviral-mediated mouse models of myeloid leukemia, and discusses some factors influencing the mouse model establishment, including retroviral construction, retrovirus titer and hematopoietic microenvironment.

Effect of in-home fortification of complementary feeding on intellectual development of Chinese children / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To explore the effect of in-home fortification of complementary feeding on intellectual development of Chinese children aged below 24 months.</p><p><b>METHODS</b>One thousand and four hundred seventy eight children aged 4-12 months were recruited and divided into study groups (formula 1 group and formula 2 group) and control group. In two study groups, in addition to the usual complementary food, children were fed with a sachet of fortified food supplement each day. Protein and micronutrients were provided in formula 1 group. Formula 2 group had the same energy intake as the formula 1 group . In addition to measurement of physical growth and detection of hemoglobin level, Development Quotient (DQ) or Intelligence Quotient (IQ) was assessed.</p><p><b>RESULTS</b>The DQ of children aged below 24 months was 97.2, 95.5, and 93.8 in formula 1 group, formula 2 group and control group, respectively, and the differences were statistically significant (P < 0.05). The DQ of children in formula 1 group, formula 2 group, and control group was 92.7, 90.4, and 88.3 respectively in the first follow up showing statistically significant differences (P < 0.05). And, DQ of children in formula 1 group, formula 2 group and control group were 96.7, 94.5, and 93.7 respectively in the second follow up, showing statistically significant differences (P < 0.05). Full-IQ of children in the formula 1 group was 3.1 and 4.5 points higher than that in formula 2 group and in control group respectively. Verbal IQ of children in the formula 1 group was 2.1 and 5 points higher than that in formula 2 group and control group respectively. Performance IQ was 2.5 and 3.1 points higher than that in formula 2 group and control group respectively. All above mentioned comparisons were statistically significant.</p><p><b>CONCLUSION</b>Fortification of complementary feeding showed persistent effect on intelligence development of young children which could persist to 6 years of age. The critical time for correction of anemia could be under 18 months.</p>

The nutrition status of children aged 6-23 months after three months of Wenchuan Earthquake in Beichuan and Lixian, Sichuan Province / 中华预防医学杂志

<p><b>OBJECTIVE</b>This project aims to investigate the nutrition status of children aged from 6 to 23 months living in Beichuan and Lixian where were seriously affected by the earthquake in 2008.</p><p><b>METHODS</b>The height, body weight and hemoglobin concentration were measured for 478 children from Leigu township, Qushan township in Beichuan county and Zagunao township, Xuecheng township and Putou township in Lixian county; the number of group 6 - 11, 12 - 17, 18 - 23 months were 190, 144, 144 respectively. The height for age (HAZ), the body weight for age (WAZ) and the weight for height (WHZ) were calculated respectively. The low weight, stunting, wasting prevalence, anemic rate were analyzed.</p><p><b>RESULTS</b>The WAZ scores of 6 - 23 months males and females in Beichuan county and Lixian county ranged from -0.97 to -0.13 and from -0.67 to -0.23, HAZ scores ranged from -1.23 to -0.31 and from -1.25 to -0.38, respectively. The WAZ (-0.89 ± 1.16) and HAZ (-1.20 ± 1.60) of 18 - 23 months infants in Beichuan county were significantly different from the WAZ and HAZ of 6 - 11 months (WAZ: -0.32 ± 0.92; HAZ: -0.58 ± 0.98) and 12 - 17 months (WAZ: -0.47 ± 1.00; HAZ: -0.68 ± 1.34) infants (F values were 7.161 and 4.584, respectively; all P values < 0.05). The WAZ (-0.63 ± 1.03) and HAZ (-1.11 ± 1.15) of 18 - 23 months in Lixian county infants were significantly different from the WAZ and HAZ of 6 - 11 months (WAZ: -0.23 ± 0.93; HAZ: -0.51 ± 1.55) infants and 12 - 17 months (WAZ: -0.58 ± 0.52; HAZ: -0.80 ± 1.19) (F values were 3.156, 4.345, all P values < 0.05). The prevalence of low weight infants (18 - 23 months) these two counties were 15.6% (12/77) and 9.1% (6/66), respectively. The prevalence of stunting in Beichuan and Lixian have reached 26% (20/77) and 24.2% (16/66), respectively. The wasting rate of 18 - 23 months infants had reached 9.1% (7/77) in Beichuan. The total anemia prevalence among infants reached 49.6% (123/248) and 78.8% (178/226) in Beichuan and Lixian, respectively. The prevalence of moderate anemia have reached 7.7% (19/248) and 19.9% (45/226), respectively.</p><p><b>CONCLUSION</b>After the earthquake in Beichuan, Lixian, the growth of infants aged 6 to 23 months old was below average. The prevalence of anemia was high. The malnutrition status of infant and young children aged from 18 to 23 months in Beichuan and Lixian was more serious, should be targeted of nutrition interventions.</p>